Grazing Days Calculator
Estimate available grazing days based on pasture size, forage yield, and daily livestock intake.
Inputs
How It Works
Grazing Days =
(Pasture Acres × Yield per Acre) ÷ Daily Herd Intake
This estimates how long available forage will sustain your herd.
Related Calculators
FAQ
Does this account for grazing efficiency?
No. Actual grazing efficiency is typically 50–70%. Adjust forage yield accordingly for more accurate estimates.
Should I use dry matter intake?
Yes. For best results, use dry matter intake values rather than as-fed weights.
How can I extend grazing days?
Improving forage management, rotational grazing, and pasture fertility can increase available grazing days.
Understanding Grazing Days
Grazing days measure how long a pasture can sustain livestock before forage resources are depleted. This metric is critical for rotational grazing, feed budgeting, and stocking decisions.
Total forage supply depends on pasture acreage and productivity. Daily herd intake varies by animal size, production stage, and environmental conditions.
Accurate grazing day calculations help prevent overgrazing, maintain pasture health, and optimize livestock performance.